80226-91-1Relevant articles and documents
Method for preparing 10,10-difluoro prostacyclins
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, (2008/06/13)
A method is provided for preparing compounds of the formulae STR1 wherein A may be --C=C-- or --C C--, by reducing an epoxy lactone of the structure STR2 to form the corresponding epoxy hemiacetal, reacting the epoxy hemiacetal with a silyl compound to form an epoxy silyl acetal, reacting the epoxy silyl acetal with an acetylenic derivative to form a silyl acetal, removing the silyl protecting group to form a hemiacetal, reacting the hemiacetal compound with an appropriate Wittig reagent to form a protected difluoro PGF2α type compound, removing the protecting group, reacting the difluoro PGF2α with an iodine compound to form an iodoether and reacting the iodoether with a base to form the desired compounds. The compounds may be used, e.g., to prevent the aggregation of blood platelets. Novel intermediates produced in the above method are also provided.